Water-balanced pump.



PATENTED JUNE 2, 1908.

H. M. SPINOLLA. WATER BALANCED PUMP.

APPLICATION FILED SEPT. 6,1907.

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HENRY M. SPINOLLA, OF SAN ANDREAS, CALIFORNIA.

WATER-B ALANCED PUMP.

Specification of Letters Patent.

Patented June 2, 1908.

Application filed September 6, 1907. Serial No. 391,630.

To all whom it may concern:

Be it known that I, HENRY M. SPINOLLA, citizen of the United States, residing at San Andreas, in the county of Calaveras and State of California, have invented certain new and useful Improvements in Water-Bah anced Pumps, of which the following is a specification.

This invention has for its object an improved construction of pump so arranged as to render easy the operation of pumping, my improved pump being balanced at all times when in operation and avoiding the necessity of moving the water by a force equal to its weight, as is the case with pumps of ordinary construction.

With this and other objects in view as will more fully appear as the description proceeds, the invention consists in certain constructions, arrangements and combinations of the parts that I shall hereinafter fully describe and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which the figure is a side elevation of a pump constructed in accordance with my invention, parts being broken away and in section.

Referring to the drawing, the numeral 1 designates the main intake pipe provided with the upwardly opening foot valve 2 and above the same formed with two branches 3 and 4 opening into the adjoining ends of longitudinally alined cylinders 5 and 6. outer end of the respective cylinders, which are preferably horizontally disposed, upwardly extending discharge pipes 7 and 8 are connected by suitable couplings, said discharge pipes being of the requisite length to convey the Water pumped to the desired point and being provided, respectively, with the outlets 7 and 8 Pistons 9 and 10 work vertically in the respective discharge pipes 7 and 8 and are connected by the pendent rods 11 to the opposite ends of a walking beam 12, which may be rocked by hand or by any other power. The pistons 9 and 10 are formed with the air vent valves 9, 10, which prevent the formation of partial vacua on the up stroke.

The cylinders 5 and 6 are separated at their adjoining ends by a stufling box 13. Pistons 14 and 15 work in the respective cylinders and are connected together by a rod 16 eX- tending through the stufling box 13, as clearly illustrated in the drawing. Valves 17 To the and 18 open inwardly into the adjoining ends of the cylinders 5 and 6,said inlet valves controlling the communication between the said cylinders and the branches 3 and 4 of the intake pipe 1. From the inner end of the cylinder 6, a pipe 19 leads and is connected at its outer end to the discharge pipe 7 above the outer end of the cylinder 5, while a corresponding pipe 20 connects the inner end of the cylinder 5 with the discharge pipe 8 above the outer end of the cylinder 6. Outlet valves 21 and 22 are mounted'in the inner ends of the pipes 19 and 20, respectively, so as to control the communication between the inner ends of said pipes and the adjoining ends of said cylinders.

In describing the practical operation of my improved pump, it will be assumed that the piston 10 is open to a full stroke. The downward movement of the said piston 10 will have moved Water in the discharge through the pipe 20 and closed the va ve 21.

When the said valve 21 closes, the pressure will be'directed against the piston head 15 in the cylinder 6, and the water that is in the said cylinder 6 in front of the piston head 15, will be moved outwardly through the pipe 19, into the discharge pipe 7 and out through the discharge opening 7 The water that was in the cylinder 5 in front of the left hand piston head 14, is also forced into the column or discharge pipe 7 and out through the opening 7 It will be particularly noted that whenever the valve 22 opens, the valve 18 closes, and the valve 17 opens to allow water to flow from the intake or suction pipe 1 into the cylinder 5. This describes one stroke of the pump, the next stroke being merely a repetition, except that the action would be the reverse or from left to right.

From the foregoing description in connection with the accompanying drawing, it will be seen that I have provided a pump which, in operation, is always balanced by the necessary to run the pump is power enough to put the water in motion and to move the pistons. The water does not have to be moved by a force equal to its weight, as with pumps of the present or ordinary construction. Consequently, a considerable saving in power is effected.

It is to be understood that my invention is not limited to any form, construction, or arrangement of couplings and that various changes may be made in the arrangement 10() weight of the water, so that the only power and construction of all the parts of the pump within the scope of the invention as defined by the appended claims. Preferably each discharge pipe is provided with a gate valve, said valves being designated 7 and 8 in order to hold the discharge pipes 7 and 8 full of water while the parts of the ump are disconnected for the purposes of repairing or the like.

Having thus described the invention, what is claimed as new is:

A pump of thecharacter described, comprising an intake pipe provided with a foot valve and formed above said valve with two branches, cylinders connected at their adjoining ends with the respective branches, inlet valves controlling communication between the branches of the intake pipe and the adjoining ends of the cylinders, discharge pipes connected to the outer ends of the respective cylinders and extending upwardly therefrom, pipes leading from the inner ends of the respective cylinders to the opposite discharge pipe, outlet valves controlling communication between the inner ends of the cylinders and said last named pipes, pistons mounted to reciprocate in the respective cylinders, a piston rod extending from one cylinder to the other and connecting together said pistons, and other pistons mounted to reciprocate in the upwardly extending portions of the discharge pipes, and means for alternately actuating the said pistons, each of said discharge pipes being provided at its upper end with a discharge opening, and near its lower end with a gate-valve, substantially as shown and described.

In testimony whereof I aflix my signature in presence of two witnesses.

HENRY M. SPINOLLA. 

